What would make studying easier for you?

I'm going into my junior year and I've always found it really difficult to sit down and just start studying. Last year I got frustrated with jumping between apps so I started building my own tool, mostly just for myself and a few friends.

The main thing it does is let you take notes directly alongside your lecture slides, then get quizzed on what you wrote after. Not generic questions, ones generated from your actual notes. It's helped me a lot with actually retaining stuff instead of just re-reading my notes.

A few friends started using it and I've been slowly improving it, but before I keep building I genuinely want to know what makes studying hard for other people.

What's the thing that makes it hardest to start? And what would actually make it easier?